As the accuracy of the hipplan relies on the ct images that have been acquired, it is essential to follow as closely as possible the parameters described in this protocol, even though it might differ from hip imaging protocols routinely used by your institution for diagnosis purpose. Modern ct scanners and revised imaging protocols have dramatically lowered radiation exposure from ct. Cardiac diseases, and in particular coronary artery disease, are the leading cause of death and morbidity in industrialized countries. Protocols for multislice helical computed tomography. Modern ct technology can be understood as a natural progression of improvements and innovations in response to both engineering problems and clinical requirements. Aapm ct scan protocols the alliance for quality computed. New applications with the assistance of innovative. University of wisconsin ct protocol sheet footankletibiadistal. Computed tomography merck manuals professional edition. National and international normative dose data is available to help radiologists identify protocols which might need to be modified. Patient should be supine, head first into the gantry, with the head in the headholder whenever possible.
Consider naming ct protocols in a manner consistent with the radlex playbook id. Translating protocols between scanner manufacturer and. Henwood clinical ct techniques and practice slideshare. The primary difference between singleslice ct ssct and msct hardware is in the design of the detector arrays, as illustrated in figure 1. From the author of our bestselling handbook on helical spiral ct comes a brandnew, indispensable, practical guide to the next generation of technology multislice or multidetector ct. Basic principles of computed tomography physics and technical considerations kyongtae t. Basic principles of computed tomography physics and. Whiting introduction slightly more than three decades old, computed tomography ct continues to advance rapidly in both imaging performance and widening clinical applications. Mri protocols pdf the table of contents is linked to the corresponding pages for quick access.
Pdf spiral and multislice computed tomography of the. Questions regarding changes in the protocols should be directed to scott collins, rtr ct or lori garceau, rtr ct arrt. Computed tomography ct, such as cone beam ct cbct or multislice computed tomography msct, has an important application in the evaluation of head and neck lesions. Step by step cross sectional anatomy isbn 1904798802 step by step regional anesthesia isbn 1848290047. Ct protocols pdf the table of contents is linked to the corresponding pages for quick access. This article describes the principles and evolution of multislice ct msct, including conceptual differences associated with slice definition, cone beam effects, helical pitch, and helical scan. Principles of multislice cardiac ct imaging bernd ohnesorge and thomas flohr contents 4. The introduction of subsecond spiral scanning with. They are based on the principle that the care provided to the trauma patient in the first. General oncology whole body feet toward head lung cancerspn whole body head toward feet melanoma total body top of head to feet. Also send the ap and lateral scout images to the ct folder.
These documents meet or exceed the requirements of the standards, and they may be used to develop facility policies and reporting forms, whether your facility is seeking accreditation or simply working to standardize or improve current practices. This is an excellent introduction to protocols for multislice ct. Helical ct has improved over the past eight years with faster gantry rotation, more powerful xray tubes, and improved interpolation algorithms 1, 2. Typically 200 imaging protocols per scanner need the actual ct protocols. Principles, design, artifacts, and recent advances press monograph positron emission tomography with computed tomography petct physical principles of computed tomography the little, brown library of radiology atlas of correlative imaging anatomy. Center the table height such that the external auditory meatus eam is at the center of the gantry. Sep 29, 2014 ct uses xrays to generate crosssectional, twodimensional images of the body. Questions regarding changes in the protocols should be directed to scott collins, rtrct or lori garceau, rtrctarrt. The membership includes academic and consulting medical physicists who specialize in ct imaging, representatives of each of the major ct scanner manufacturers, and liaisons to the. Standard imaging protocols this document includes typical imaging protocols for diagnostic imaging. General guiding principles for reducing dose include tailoring a scan to a patient. Principles of multislice cardiac ct imaging mafiadoc. With the introduction of multislice computed tomography ct into clinical practice a new era began, leading to the possibility of nearly isotropic voxel imaging and highquality reconstructions.
Developing and maintaining neuroradiology ct protocols requires both an understanding of ct physics and aclinical awareness of key anatomic structures. Ct scanners differ in their capabilities and various indications require unique protocols, but there remains room for standardization and optimization. In ct, an xray source and xray detector housed in a doughnutshaped assembly move circularly around a patient who lies on a motorized table that is moved through the machine. Protocols, or scan instructions, are the core of every ct examination. All protocols and recommendations within this section are valid for current dualsource ct systems but might be easily adapted to other ct systems. Focal spot at 120 kv, if the ma is less than 570, the machine will default to the small focal spot, providing greater detail. Clinical ct techniques and practice edited by suzanne henwood msc. Protocols for multislice ct second edition pdf download. Computed tomography explore from the merck manuals medical professional version. Ct imaging increasingly relies on the integration of a variety of knowledge and skills. Stanford cardiovascular ct scanning and injection protocols. Nuclear protocols pdf the table of contents is linked to the corresponding pages for quick access. In this paper, the authors describe methods for pinpointing deficiencies in ct protocols and provide a systematic approach for optimizing them.
Ct scanners has resulted in scanning protocols that are. Export to pdf and upload individually tracks protocol version. Practical tips for the imaging physicist physicist. The principles underlying multidetector ct remain similar to those of helical ct. Unless otherwise noted, protocols that include intravenous contrast enhancement use a 300 concentration, low osmolality agent. Basic principles of computed tomography physics and technical. It is a noninvasive technique that permits the lesion size and margins, the bone destruction and expansion patterns to be precisely analysed 6, 7. Jan 16, 2006 this book provides structured uptodate information on all routine protocols used for multislice multidetector row ct. Technical principles and applications of multislice spiral ct. Images are acquired by rapid rotation of the xray tube 360 around the patient. This book provides structured uptodate information on all routine protocols used for multislice multidetector row ct. We hope you find this helpful in providing optimal patient care. These same principles of tomographic imaging can also be applied to radionuclide scanning. Sample documents ct the iac is pleased to include sample documents to assist facilities in providing quality care to their patients.
In this paper we summarize approaches to reduce dose, as discussed in lectures comprising the first session of the 20 ucsf virtual symposium on radiation safety in computed tomography. Nuclear protocols pdf the table of contents is linked to the corresponding pages for quick access fluoro protocols. Inland imaging is dedicated to providing outstanding service to our referring physicians by offering a wide range of support options. Stanford cardiovascular ct scanning and injection protocols preface cardiovascular imaging is one of the most important and visible beneficiaries of the recent and dramatic evolution of comuted tomographic ct technology. An appreciation of the potential of ct and its limitations can be obtained with an understanding of basic. By combining partial acquisition data from two sources for cardiac image. Select the petct acquisition protocol that is appropriate for the diagnosis and clinical question scan whole body region skull base to proximal thigh. For this reason users may notice that posts asking for second opinions tend to be downvoted, have fewer comments, and will end up being deleted. Multidetector computed tomography in the investigation of pulmonary thromboembolic disease 6. Silverman and his renowned colleagues present detailed, easytofollow scanning protocols for all areas of the body, for pediatric examinations, and for threedimensional imaging. Gsi assist to personalize scan protocols based on anatomy.
Emphasis is placed on a team approach, with a team consisting of at least one radiologist, one physicist, and one technologist. Developing dose and protocol monitoring from scratch ingrid reiser, phd dabr. Confirm the images have passed to the transmission queue. Find protocols for performing extremities ct scans at rhode island hospital, also welcoming massachusetts patients. This forum is for education of those interested in radiology only, and not for personal advice. Technical principles and applications of multislice ct. Choose one or more of the following reformatting protocols. Scan protocols for thorax scans for different generations of ct scanners. In 2010, the alliance for quality computed tomography working group was formed to provide information to ct users that enhances the quality of their ct practice. Axial slice top and mpr bottom for a spiral scan of a pelvic phantom at pitch 1. Examples of polytrauma ct protocols are listed in appendix 2. Phd mayo clinic, rochester, mn protocols, or scan instructions, are the core of every ct examination.
Focal spot at 120 kv, if the ma is less than 570, the machine will default to the small focal spot, providing greater detail on the images. In modern 3rdgeneration ct systems with fanbeam geometry, the minimum amount of scan data needed for reconstruction of axial slices is a socalled partial scan parker 1982. This reference is meant to serve as a guideline for prescribing ct examinations, and should be modified as needed for a particular patient. Multislice ct scanning protocols for specific clinical indications are presented in the same userfriendly outline format as in dr. The volume covers all investigations of the brain, neck, lung and chest, abdomen and the periphery, as well as special protocols for the heart, for ct angiography and for ct guided interventions. Xray protocols pdf petct protocols pdf mammography protocols. Representative images appear on the page opposite each protocol. The ct imaging protocol should be adapted according to the suspected cardiac defect, the type of previous surgical repair, and the patients compliance. Guidelines for siemens healthcare dual source systems the dual source and flash spiral cardio protocols utilize two tubes with the same kv setting and the sum of the mas from both tubes for one rotation. Les tableaux sont exclusivement disponibles en format pdf.
Iodinated contrast, pressure injector, and protocols in body imaging digital posters 2015 tripleruleout ct angiography for evaluation of acute chest pain and possible acute coronary syndrome. In full colour throughout, and with a free cd rom containing the 62 figures in the book, step by step ct scan is an excellent pocket reference for technicians and radiology residents. Concern discussed at 2010 ct dose summit, and in many. Ct uses xrays to generate crosssectional, twodimensional images of the body. In a convenient doublepage layout, this book provides structured information on all routine protocols to be used for multislice ct. Usually, multidetector scanners with 4 to 64 or more rows of detectors are used because more detectors allow quicker. If you want to perform high quality ct studies, this is the book for you.
Principles, technical approaches, and clinical applications. Several imaging protocols have since then been implemented that are less invasive and very. You are welcome to post your own medical images, however, second opinions advice will not be given or encouraged. Gsi xtream on revolution ct white paper i october, 2017. Ct instrumentation and principles of ct protocol optimisation. Ct scan parameters and radiation dose yale school of medicine. Ct imaging increasingly relies on the integration of. The volume contains a detailed technical section and covers the prevailing investigations of the brain, neck, lungs and chest, abdomen with parenchymal organs and gastrointestinal tract, the musculoskeletal system and cta as well as dedicated protocols for the heart. We offer it support and integration as well as providing printed and digital materials to better assist in informing your patient about a procedure. Ultrasound protocols pdf the table of contents is linked to the corresponding pages for quick access vascular protocols. Moderncttechnology canbe understood as a natural progression of improvements and in.
The following references discuss dosereducing techniques, including the principles and. The volume contains a detailed technical section and covers the prevailing investigations of the brain, neck, lungs and chest, abdomen with parenchymal organs and. Technologist with some or little background on the basic principles. University of wisconsin ct protocol sheet footankletibia. In 10 years, it developed from an investigative tool into a clinical reality.1478 1513 720 1330 624 232 603 1575 1313 970 1199 486 621 198 810 875 1415 411 1453 858 975 983 23 837 1298 1101 332 933 783 600